The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Apr. 22, 2009
Applicants:
Masakiyo Tanaka, Kawasaki, JP;
Takeshi Otani, Kawasaki, JP;
Shusaku Ito, Fukuoka, JP;
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L 21/00 (2013.01); G11B 20/24 (2006.01); G10L 21/0208 (2013.01); G10L 15/00 (2013.01); G06F 11/00 (2006.01); H03M 13/00 (2006.01); H04R 29/00 (2006.01); H04R 3/00 (2006.01); H04B 3/46 (2006.01); H04B 1/38 (2006.01); H04L 5/12 (2006.01); G11B 20/10 (2006.01);
U.S. Cl.
CPC ...
G11B 20/24 (2013.01); G11B 20/10527 (2013.01); G10L 21/0208 (2013.01); G11B 20/10009 (2013.01); G11B 2020/10564 (2013.01);
Abstract
A difference signal calculating unit of a noise detecting device calculates a difference between the amplitudes of a residual signal at each sample timing and a residual signal at the preceding sample timing. A difference signal comparing unit determines whether or not an impulsive noise is present on the basis of the difference signal at the current sample timing, and the difference signal at each sample timing within a predetermined duration from the current sample timing.